I use about 2 Tbsp per 100 g oats but really just go with how sweet you want your granola to be. Don't worry about it not sticking together and being crunchy. The oven will make it crunchy anyways and the clusters are really about how thoroughly you mix. Sometimes a little dash of salt (especially with chocolatey mixes) can add that extra BOOM flavor!

This one was:

Oats

Honey

A dash of leftover maple syrup (I really just wanted to finish the bottel)